Are Chordates Unicellular or Multicellular?

Members of the phylum Chordata are multicellular. This is because members of this phylum are animals, and animals are by definition multicellular.

What classifies a chordate?

: any of a phylum (Chordata) of animals having at least at some stage of development a notochord, dorsally situated central nervous system, and gill slits and including the vertebrates, lancelets, and tunicates.

Are Chordata Coelomates?

All chordates are deuterostomes. ... All chordates are based on a bilateral body plan. All chordates are coelomates, and have a fluid-filled body cavity called a coelom with a complete lining called peritoneum derived from mesoderm (see Brusca and Brusca).